:root {
  --primary-color: #017439; /* Dark Green */
  --secondary-color: #FFFFFF; /* White */
  --button-color-register: #C30808; /* Red */
  --button-color-login: #C30808; /* Red */
  --button-font-color: #FFFF00; /* Yellow */
  --text-color-dark: #333333;
  --text-color-light: #FFFFFF;
  --header-offset: 90px; /* Desktop */
}

@media (max-width: 768px) {
  :root {
    --header-offset: 104px; /* Mobile */
  }
}

/* Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-color-dark);
  padding-top: var(--header-offset); /* Apply header offset to body */
  overflow-x: hidden; /* Prevent horizontal scroll on mobile */
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

/* Header Styles */
.site-header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  background-color: var(--secondary-color); /* Default background, will be overridden by sections */
  min-height: var(--header-offset); /* Ensure header has minimum height */
  overflow-x: hidden; /* Prevent header content from overflowing */
}

.header-top {
  background-color: var(--primary-color); /* Dark green for top bar */
  padding: 10px 0;
  display: flex; /* For hamburger and logo on mobile */
  align-items: center;
}

.header-container, .nav-container, .footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  width: 100%;
}

.header-top .header-container {
  justify-content: space-between;
}

.logo {
  font-size: 24px;
  font-weight: bold;
  color: var(--text-color-light); /* White text on dark green background */
  padding: 5px 0;
}

.desktop-nav-buttons {
  display: flex;
  gap: 15px;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 5px;
  font-weight: bold;
  text-align: center;
  transition: background-color 0.3s ease, transform 0.2s ease;
  white-space: nowrap; /* Prevent buttons from wrapping on desktop */
  text-decoration: none; /* Remove underline for buttons */
}

.btn-register {
  background-color: var(--button-color-register); /* Red */
  color: var(--button-font-color); /* Yellow */
}

.btn-login {
  background-color: var(--button-color-login); /* Red */
  color: var(--button-font-color); /* Yellow */
}

.btn:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
}

.main-nav {
  background-color: var(--secondary-color); /* White for main nav */
  padding: 10px 0;
  display: flex; /* Desktop default: visible, horizontal */
  flex-direction: row;
  justify-content: center;
  align-items: center;
}

.main-nav .nav-container {
  justify-content: center;
  flex-wrap: wrap; /* Allow wrapping on smaller desktop screens */
}

.nav-link {
  color: var(--text-color-dark); /* Dark text on white background */
  padding: 10px 15px;
  font-weight: bold;
  transition: color 0.3s ease, background-color 0.3s ease;
  border-radius: 3px;
}

.nav-link:hover {
  color: var(--secondary-color); /* White text on hover */
  background-color: var(--primary-color); /* Dark green background on hover */
}

/* Hamburger Menu (Hidden on Desktop) */
.hamburger-menu {
  display: none; /* Hidden on desktop */
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  position: relative;
  z-index: 1001; /* Above logo and buttons */
  margin-right: 15px; /* Spacing from logo */
}

.hamburger-menu span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--secondary-color); /* White bars on dark green header-top */
  margin: 5px 0;
  transition: all 0.3s ease;
}

/* Mobile Nav Buttons (Hidden on Desktop) */
.mobile-nav-buttons {
  display: none; /* Hidden on desktop */
  background-color: var(--secondary-color); /* White background for mobile buttons */
  padding: 10px 15px; /* Vertical padding, horizontal padding for container */
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden; /* Prevent overflow */
  gap: 10px;
  flex-wrap: nowrap;
  justify-content: center; /* Center buttons if less than 2 */
}

/* Mobile Menu Overlay (Hidden on Desktop) */
.mobile-menu-overlay {
  display: none; /* Hidden on desktop */
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 998;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-menu-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* Footer Styles */
.site-footer {
  background-color: var(--primary-color); /* Dark green for footer */
  color: var(--text-color-light); /* White text on dark green */
  padding: 40px 0 20px;
}

.site-footer .footer-container {
  align-items: flex-start;
  flex-wrap: wrap;
  justify-content: space-between;
}

.footer-col {
  flex: 1;
  min-width: 250px;
  margin-bottom: 20px;
  padding-right: 20px;
}

.footer-col h3 {
  font-size: 18px;
  margin-bottom: 15px;
  color: var(--secondary-color); /* White headings */
}

.footer-col p {
  font-size: 14px;
  line-height: 1.8;
  opacity: 0.9;
}

.footer-logo {
  font-size: 28px;
  font-weight: bold;
  margin-bottom: 15px;
  display: block;
  color: var(--secondary-color); /* White logo text */
}

.footer-nav li {
  margin-bottom: 8px;
}

.footer-nav a {
  font-size: 14px;
  color: var(--text-color-light); /* White links */
  opacity: 0.8;
  transition: opacity 0.3s ease;
}

.footer-nav a:hover {
  opacity: 1;
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 20px;
  margin-top: 20px;
  text-align: center;
  font-size: 13px;
  opacity: 0.8;
}

/* Media Queries for Mobile */
@media (max-width: 768px) {
  .header-top {
    padding: 10px 15px; /* Adjust padding for mobile */
    justify-content: space-between; /* To place hamburger left, logo center */
  }

  .header-top .header-container {
    padding: 0; /* Container itself shouldn't have padding, let header-top handle it */
    justify-content: space-between;
    position: relative; /* For absolute positioning of logo if needed */
  }

  .hamburger-menu {
    display: block; /* Show hamburger menu on mobile */
    order: 0; /* Place to the left */
  }

  .logo {
    order: 1; /* Place in the middle */
    flex: 1; /* Take available space to help centering */
    text-align: center; /* Center text logo */
    font-size: 20px; /* Smaller font for mobile */
    padding: 0; /* Remove padding from logo itself */
  }

  /* This element helps push the logo to the visual center when hamburger is on the left. */
  .header-top .header-container::after {
    content: '';
    width: 45px; /* Match hamburger width (padding 10px + span width 25px = 45px approx) for visual balance */
    order: 2;
  }

  .desktop-nav-buttons {
    display: none; /* Hide desktop buttons on mobile */
  }

  .mobile-nav-buttons {
    display: flex !important; /* Show mobile buttons */
  }

  .mobile-nav-buttons .btn {
    flex: 1;
    min-width: 0;
    max-width: calc(50% - 5px); /* Max width for two buttons with 10px gap */
    box-sizing: border-box;
    padding: 8px 12px; /* Smaller padding */
    font-size: 13px; /* Smaller font size */
    white-space: normal; /* Allow text wrapping */
    word-wrap: break-word; /* Ensure long words break */
    overflow-wrap: break-word;
  }

  .main-nav {
    display: none; /* Hide main nav by default on mobile */
    flex-direction: column; /* Stack links vertically */
    position: fixed; /* Fixed position for mobile menu */
    top: var(--header-offset); /* Start below the fixed header (header-top + mobile-nav-buttons) */
    left: 0;
    width: 70%; /* Menu width */
    height: calc(100% - var(--header-offset)); /* Full height below header */
    background-color: var(--secondary-color); /* White background for mobile menu */
    box-shadow: 2px 0 5px rgba(0, 0, 0, 0.2);
    transform: translateX(-100%); /* Initially off-screen to the left */
    transition: transform 0.3s ease;
    overflow-y: auto; /* Allow scrolling if menu content is long */
    z-index: 999; /* Below overlay, above content */
    padding: 20px 0; /* Padding inside the menu */
  }

  .main-nav.active {
    display: flex; /* Show menu when active */
    transform: translateX(0); /* Slide into view */
  }

  .main-nav .nav-container {
    flex-direction: column;
    padding: 0 15px; /* Adjust padding for mobile nav links */
  }

  .nav-link {
    width: 100%;
    padding: 12px 15px;
    border-bottom: 1px solid #eee;
    text-align: left;
    color: var(--text-color-dark);
  }

  .nav-link:last-child {
    border-bottom: none;
  }

  /* Hamburger menu active state (X icon) */
  .hamburger-menu.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .hamburger-menu.active span:nth-child(2) {
    opacity: 0;
  }

  .hamburger-menu.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  /* Content overflow prevention for mobile */
  .page-content img {
    max-width: 100% !important;
    height: auto !important;
    display: block;
  }
  .page-content {
    overflow-x: hidden;
    max-width: 100%;
  }
  body {
    overflow-x: hidden;
  }

  /* Footer adjustments for mobile */
  .site-footer .footer-container {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .footer-col {
    min-width: unset;
    width: 100%;
    padding-right: 0;
    margin-bottom: 30px;
  }

  .footer-col h3 {
    margin-bottom: 10px;
  }

  .footer-nav {
    padding: 0;
  }

  .footer-nav li {
    margin-bottom: 5px;
  }
}

/* Prevent body scroll when menu is active */
body.no-scroll {
  overflow: hidden;
}

/* Payment Methods 图标容器样式 */
.payment-icons {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  align-items: flex-start;
  gap: 5px;
}

.payment-icons img,
.payment-icon {
  max-height: 50px;
  height: auto;
  width: auto;
  display: block;
}

/* Game Providers 图标容器样式 */
.game-providers-icons {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  align-items: flex-start;
  gap: 8px;
  width: 100%;
}

.game-providers-icons img,
.game-provider-icon {
  max-height: 50px;
  height: auto;
  width: auto;
  display: block;
}

/* Social Media 图标容器样式 */
.social-media-icons {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  align-items: flex-start;
  gap: 8px;
  width: 100%;
}

.social-media-icons img,
.social-media-icon {
  max-height: 50px;
  height: auto;
  width: auto;
  display: block;
}
/* 移动端内容区防溢出（系统追加，请勿删除） */
@media (max-width: 768px) {
  .page-content img {
    max-width: 100% !important;
    height: auto !important;
    display: block;
  }
  .page-content {
    overflow-x: hidden;
    max-width: 100%;
  }
  body {
    overflow-x: hidden;
  }
}